Home / 594.80-820.78-329.20

Finding the Fourth Proportional to 594.80, 820.78 and 329.20

Calculator

Solution

The fourth proportional to 594.80, 820.78 and 329.20 is: 454.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    594.80 : 820.78 = 329.20 : x
  2. Step 2: Convert to fraction form
    594.80/820.78 = 329.20/x
  3. Step 3: Cross multiply
    594.80x = 820.78 × 329.20
  4. Step 4: Simplify right side
    594.80x = 270,200.78
  5. Step 5: Solve for x
    x = 270,200.78/594.80
  6. Step 6: Final answer
    x = 454.27

Related Problems

Find fourth proportional to 297.40, 410.39 and 164.60
Half scale
Find fourth proportional to 1,189.60, 1,641.56 and 658.40
Double scale
Find fourth proportional to 595.80, 822.16 and 330.20
Similar ratio
Find fourth proportional to 892.20, 1,231.17 and 493.80
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.